<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色管理</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVsible = true"
            >添加角色</el-button
          >
        </el-col>
      </el-row>
      <!-- 角色列表区域 -->
      <el-table :data="roleList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand" label="#">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRightById(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <el-row
                  :class="[i2 == 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                      type="success"
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                      >{{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>{{ scope.row }}</pre> -->
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="角色" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
              @click="showEditDialog(scope.row.id)"
              >编辑</el-button
            >
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="removeUserById(scope.row.id)"
              >删除</el-button
            >
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVsible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体 -->
      <el-form
        :model="addForm"
        ref="addFormRef"
        label-width="80px"
        :rules="addFormRules"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVsible = false">取 消</el-button>
        <el-button type="primary" @click="adduser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClose"
    >
      <el-form
        :model="editForm"
        :rules="addFormRules"
        ref="editFormRef"
        label-width="80px"
      >
        <el-form-item label="角色id">
          <el-input v-model="editForm.roleId" disabled></el-input>
        </el-form-item>
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配权限的弹出框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <!-- 树型控件 -->
      <el-tree
        :data="rightsList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defkeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights()">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    //验证是否为中文的规则
    var checkChinese = (rule, value, cb) => {
      var regChinese =
        /^(?:[\u3400-\u4DB5\u4E00-\u9FEA\uFA0E\uFA0F\uFA11\uFA13\uFA14\uFA1F\uFA21\uFA23\uFA24\uFA27-\uFA29]|[\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872\uD874-\uD879][\uDC00-\uDFFF]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1\uDEB0-\uDFFF]|\uD87A[\uDC00-\uDFE0])+$/
      if (regChinese.test(value)) {
        //合法输入
        return cb()
      }
      return cb(new Error('请输入中文'))
    }
    return {
      //所有角色列表数据
      roleList: [],
      addDialogVsible: false, //控制添加角色对话框的显示隐藏
      editDialogVisible: false, //控制修改角色对话框的显示隐藏
      addForm: {}, //添加角色表单
      //添加表单的规则验证
      addFormRules: {
        roleName: [
          {
            required: true,
            message: '请输入角色名称',
            trigger: 'blur',
          },
          {
            min: 2,
            max: 10,
            message: '角色名称长度在2～10个字符之间',
            trigger: 'blur',
          },
          {
            validator: checkChinese,
            trigger: 'blur',
          },
        ],
        roleDesc: [
          {
            required: true,
            message: '请输入角色描述',
            trigger: 'blur',
          },
          {
            min: 3,
            max: 15,
            message: '角色描述长度在3～15个字符之间',
            trigger: 'blur',
          },
          {
            validator: checkChinese,
            trigger: 'blur',
          },
        ],
      },
      //查询到需要修改的用户信息
      editForm: {},
      setRightDialogVisible: false, //控制分配权限对话框的显示与隐藏
      rightsList: [], //所有权限的数据
      //树型控件的属性绑定对象
      treeProps: {
        label: 'authName',
        children: 'children',
      },
      //默认选中的节点的id值
      defkeys: [],
      //即将分配权限的角色id
      roleId: '',
    }
  },
  methods: {
    //获取角色列表
    async getRoleList() {
      const { data: res } = await this.$axios.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.roleList = res.data
      console.log(this.roleList)
    },
    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    //添加角色
    adduser() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return this.$message.error('角色信息输入有误')
        //可以发送添加角色请求
        const { data: res } = await this.$axios.post('roles', this.addForm)
        if (res.meta.status !== 200) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        this.addDialogVsible = false
        this.getRoleList()
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$axios.get('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('用户信息获取失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    //监听修改用户对话框的关闭事件
    editDialogClose() {
      this.$refs.editFormRef.resetFields()
    },
    //修改角色信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return this.$message.error('角色信息表单输入有误')
        //可以发送修改角色的请求
        const { data: res } = await this.$axios.put(
          'roles/' + this.editForm.roleId,
          { roleName: this.editForm.roleName, roleDesc: this.editForm.roleDesc }
        )
        if (res.meta.status !== 200)
          return this.$message.error('编辑角色信息失败')
        this.$message.success('编辑角色信息成功')
        this.editDialogVisible = false
        this.getRoleList()
      })
    },
    //删除角色信息
    removeUserById(id) {
      this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
      })
        .then(async () => {
          //发送删除角色的请求
          const { data: res } = await this.$axios.delete('roles/' + id)
          if (res.meta.status !== 200) {
            return this.$message.error('删除角色信息失败')
          }
          this.getRoleList()
          this.$message({
            type: 'success',
            message: '删除成功!',
          })
        })
        .catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除',
          })
        })
    },
    //根据id删除对应的权限
    removeRightById(roleId, rightId) {
      //弹框提示用户是否要删除
      this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
      })
        .then(async () => {
          const { data: res } = await this.$axios.delete(
            `roles/${roleId.id}/rights/${rightId}`
          )
          if (res.meta.status !== 200) {
            return this.$message.error('权限删除失败!')
          }
          roleId.children = res.data
          this.$message({
            type: 'success',
            message: '删除成功!',
          })
        })
        .catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除',
          })
        })
    },
    //展示分配权限的弹框
    async showSetRightDialog(role) {
      this.roleId = role.id
      //获取所有权限的数据
      const { data: res } = await this.$axios.get('rights/tree')
      if (res.meta.status !== 200)
        return this.$message.error('获取权限数据失败')
      //获取到的权限数据，保存到data中
      this.rightsList = res.data
      //递归获取三级节点的id
      this.getLeafKeys(role, this.defkeys)

      this.setRightDialogVisible = true
    },
    //通过递归的形式获取角色下所有三级权限的id，并保存到数组中
    getLeafKeys(node, arr) {
      //如果当前node节点，不包含children属性，则是三级节点
      if (!node.children) {
        return arr.push(node.id)
      }

      node.children.forEach((item) => this.getLeafKeys(item, arr))
    },
    //监听分配权限对话框的关闭事件
    setRightDialogClosed() {
      this.defkeys = []
    },
    //点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$axios.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      )
      if (res.meta.status !== 200) {
        return this.$message.error('分配角色权限失败!')
      }
      this.$message.success('分配角色权限成功!')
      this.getRoleList()
      this.setRightDialogVisible = false
    },
  },
  created() {
    this.getRoleList()
  },
}
</script>
<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>